I have the 780 and I enjoy using the saw, I use it to cut longer boards, I crosscut all shorter stuff on the 66, The 780 with a good blade will give you quick nice accurate cuts, I absolutely love the led light that shows the cut line, wonderful idea I think! Last time I went to cut 45 degree angles I had some trouble fitting the joints but Then I remembered I never set the saw up properly after unboxing,

Assuming both saws are in the same condition, calibrated and work perfectly, the differences are:

- the 708 spins 300 rpm more than the 780- the 708 is supposedly 1 lb. heavier than the 780- the 780 was designed to have much better dust collection ability – this is very difficult to prove however- the 780 gets criticized on many forums for having rough/too-much-resistance slide bearings, and there is no good fix for this either. Apparently DeWalt still hasn’t fixed this on their latest selling 780’s. I haven’t read that this was an issue with the 708.- the 780 gets the highly-acclaimed LED XPS cross cut positioning system – most owner reviews highlight this as a major usability feature- your resale price of the 708 will be less than the 780- you can buy the 780 with a new smell and warranty, the 708 you cannot

Aside: The 780 would be my personal 1st choice for a new CSMS purchase – if Bosch hadn’t come up with their GCM12SD ‘axial-glide’ miter saw (the one I still want).